The Average Lengths L of Cellular Phone Calls in Minutes

Multiple Choice

The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below.
$\begin{array}{l}\begin{array}{|l}\hline \\\text { Year }\\\hline 1999 \\2000 \\2001 \\2002 \\2003 \\2004\\\hline \end{array}\begin{array}{|c|}\hline \text { Average length, L } \\\text { (In minutes) }\\\hline 2.38 \\2.56 \\2.74 \\2.73 \\2.87 \\3.05\\\hline \end{array}\end{array}$

Use the regression feature of a graphing utility to find a linear model for the data. Let $t$ represent the year, with $t = 9$ corresponding to 1999 . Use the model to predict the average lengths of cellular phone calls for the year 2015 . Round your answer to two decimal places.

A) $4.37$ minutes
B) $8.74$ minutes
C) $5.37$ minutes
D) $3.37$ minutes
E) $2.19$ minutes